<script setup>
import {computed, reactive, ref} from "vue";
import {Lock, User, Message, EditPen} from "@element-plus/icons-vue";
import router from "@/router";
import {ElMessage} from "element-plus";
import {get, post} from "@/net"

const form = reactive({
  username: '',
  password: '',
  password_repeat: '',
  email: '',
  code: ''
})

const coldTime = ref(0)
const formRef = ref()
const validateUsername = (rule, value, callback) => {
  if(value === '') {
    callback(new Error('请输入用户名'))
  } else if (!/^[a-xA-Z0-9\u4e00-\u9fa5]+$/.test(value)){
    callback(new Error('用户名不能包含特殊字符，只能是中/英文'))
  } else {
    callback()
  }
}
const validPassword = (rule, value, callback) => {
  if(value === ''){
    callback(new Error('请再次输入密码'))
  } else if (value !== form.password){
    callback(new Error('两次输入的密码不一致'))
  } else {
    callback()
  }

}
const rule = {
  username: [
      {validator: validateUsername, trigger: ['blur','change']}
  ] ,
  password: [
      {required: true, message: '请输入密码' , trigger: 'blur' },
      { min: 6, max: 20, message: '密码的长度必须在6-20个字符之间', trigger: ['blur','change'] }
  ] ,
  password_repeat: [
      { validator: validPassword, trigger: ['blur', 'change']}
  ] ,
  email: [
      { required: true, message: '请输入邮件地址' , trigger: 'blur' },
      { type: 'email', message: '请输入合法的电子有限地址', trigger: ['blur','change'] }
  ] ,
  code: [
    { required: true, message: '请输入获取的验证码' , trigger: 'blur' },
  ]
}
function askCode(){

  if( isEmailValid ){
    coldTime.value = 60
    get(`/api/auth/ask-code?email=${form.email}&type=register`, () => {
      ElMessage.success(`验证码已发送邮箱${form.email}，请注意查收`)
      setInterval(()=>coldTime.value--, 1000)
    })
  }
  else {
    coldTime.value = 0
    ElMessage.warning("请输入正确的电子邮件！")
  }
}

const isEmailValid = computed(() => /^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/.test(form.email))

function register(){
  console.log(formRef.value)
  formRef.value.validate((valid) => {
    if(valid) {
      post('/api/auth/register', {...form}, () => {
        ElMessage.success('注册成功，欢迎加入我们')
        router.push('/')
      })
    } else {
      ElMessage.warning('请完整填写注册表单内容')
    }
  })
}

</script>

<template>
  <div style="text-align: center;margin: 0 20px">
    <div style="margin-top: 100px">
      <div style="font-size: 25px; font-weight: bold">注册新用户</div>
      <div style="font-size: 14px; color: grey" >欢迎注册我们的学习平台，请在下方填写相关信息</div>
    </div>
    <div style="margin-top: 50px">
      <el-form :model="form" :rules="rule" ref="formRef">
        <el-form-item prop="username">
          <el-input v-model="form.username" maxlength="10" type="text" placeholder="用户名\邮箱账号">
            <template #prefix>
              <el-icon><User/></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input v-model="form.password" maxlength="20" type="password" placeholder="密码">
            <template #prefix>
              <el-icon><Lock/></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password_repeat">
          <el-input v-model="form.password_repeat" maxlength="20" type="password" placeholder="重复密码">
            <template #prefix>
              <el-icon><Lock/></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="email">
          <el-input v-model="form.email" maxlength="30" type="email" placeholder="电子邮件地址">
            <template #prefix>
              <el-icon><Message /></el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="code">
          <el-row :gutter="10" style="width: 100%" >
            <el-col :span="17">
              <el-input v-model="form.code" maxlength="6" type="text" placeholder="请输入验证码">
                <template #prefix>
                  <el-icon><EditPen /></el-icon>
                </template>
              </el-input>
            </el-col>
            <el-col :span="5">
              <el-button @click="askCode" :disabled=" !isEmailValid || coldTime" type="success">
                {{coldTime > 0 ? `清稍后${coldTime}秒` : '获取验证码'}}
              </el-button>
            </el-col>
          </el-row>
        </el-form-item>
      </el-form>
    </div>
    <div style="margin-top: 20px">
      <el-button @click="register" style="width: 270px" type="warning" plain>立即注册</el-button>
    </div>
    <div style="margin-top: 80px">
      <span style="font-size: 14px; line-height: 15px;color: grey">已有账号？</span>
      <el-link style="translate: 0 -1px" @click="router.push('/')">立即登录</el-link>
    </div>

  </div>
</template>

<style scoped>

</style>